When configuring a Schema Registry connection in Kadeck, you can use custom configuration properties by following these steps:
- In the Schema Registry tab, select "Custom Configuration" as the Authentication method.
- Switch to the Broker Configuration tab and expand the "Custom configuration" accordion.
- Add your Schema Registry properties by prefixing them with schemaregistry.
All official Schema Registry properties are supported as long as they are prefixed with schemaregistry. This allows you to configure advanced authentication methods and security settings that aren't covered by the basic authentication options.

Make sure to consult the official Schema Registry documentation for a complete list of available configuration properties.